Preheat oven to 170°C.
Prepare Syrup: Place syrup ingredients into a small pot and heat until sugar is dissolved. Simmer for 15 minutes. Keep an eye on it. It should just be a very light runny syrup.
Butter the bundt pan well with some of the melted butter (be sure to get into every groove).
Place the saffron into the hot milk and allow to steep
Whisk the sugar and eggs together until thickened and light in colour.
Sift all the dry ingredients into the egg mixture. Add the toasted sesame seeds.
Add the melted butter, yoghurt and orange blossom water.
Mix vigorously until well combined and smooth.
Spoon mixture into the buttered bundt pan. The mixture allows for 10 - 12 mini bundt cakes (depending on size).
Bake in the middle of the oven for + - 17 minutes. Use a thin skewer to check if it comes out clean.
Invert pan over a cooling rack to release the cakes. They should simply just slide out. Prick a few holes into the cakes using a thin skewer or cake tester.
Make sure there is a tray below the cooling rack and gently and slowly drizzle the syrup over the cakes to allow syrup to absorb.
Sprinkle immediately with pistachio crumbs.
Delicious served warm with tea or Arabic coffee.